<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <title>
        {% block title %}
        {% endblock %}
    </title>
    {% block extCSS %}
    {% endblock %}

</head>
<body>
{% block content %}
{% endblock %}

{% block extJS %}
{% endblock %}
</body>
</html>